Coupling-shank and yoke connection.



E. H. SCHMIDT; COUPHNG SHANK AND YOKE CONNECTION. APPLICATION men Misha.l9l5.

1,236,882. PatntedAug. 14,1917.

WITNESSES: INVENTOR TTORNEY warren s acres ora ion,

H. SCHMIDT, 0F CLEVELAND, GHIO, ASSIGNOE TO THE NATIONAL MALLEABLEGASTIN'GS COMYANY, 0E CLEVELAND, CHIC, CORPORATIQLN GE @1310.

GOUE'LING-SHANK AND YOKE CONNECTION vide a simple and convenient form ofcon-- nection by which the parts can be readily disconnected, either bya straight rearward movement of the yoke or by a forward movement of thecoupler shank, and-permits the coupler to angle laterally relative tothe yoke. My invention also consists in reinforcing the yoke tostrengthen the junctures between the bosses at the forward end of theoke and the *oke arms and in roviding bufiing hearings on the yoke forthe coupler shank, thereby to relieve the pivot pin from undue buffingstresses.

Referring to the drawings, A indicates a coupler shank and B the yoke,which is of U-shape, open at its forward end. The forward ends of thearms 2- of the yoke are in the form of enlarged bosses3, which are ofgreater vertical depth than the thickness of the arms of the yoke so asto provide a substantial bearing for the body of the connecting pin orbolt 4. Extending around the yoke is a rib which extends forwardly ofthe points of juncture between the arms and the enlarged bosses 3, andthus provides a reinforcement which greatly strengthens the yoke andprevents failure atthe junction points, which are indicated by theletter The rib 5, at lts forward ends, is bifurcated and flaredoutwardly to form sockets or semi-circular bearings 6.

The coupler shank A has at its rearward end a central. portion 7,adapted to enter between the bosses 3, apertured for reception of thepin 4, and projections 8 which have rearward extensions or lugs 9overlapping the outside faces of the bosses 3, and having rounded rearends 10-1ntended I f Specification of Letters Patent. Patg -p d A 1% 7Application filed August 24, 1915.

Serial No. 47,022.

forward extensions of-the rib 5 on the bosses 3 prevents the arms of theyoke, which are not connected at their forward ends, from spreading andthereby throwing so great a bending moment upon the pin. or bolt as tocause it to bend.

The parts can be readily assembled and the construction is a veryconvenient one in facilitating car repairs. After removing the pin orbolt 4 the yoke and coupler can be disengaged, either by a straightrearward movemen of the yoke or by the forward movement of the couplershank. This enables the draft gear to be disengaged and to be droppeddown from the car frame, by I simply sliding the coupler forward to anextent sufficient to disengage it from the yoke.

The terms and expressions whichl have employed are used as terms ofdescription and not of limitation, and I have no intention, in the useof such terms and expressions, of excluding any mechanical equivalentsof the features shown and described, or portions thereof, but recognizethat various structural modifications are possible within the scope ofthe invention claimed.

What I claim is: v I

In a coupler shank and yoke connection, a draft rigging yoke havingupper and lower arms and a vertical portion connecting said arms attheir rear ends, the forward ends of said arms haviiig integralenlargedbosses of greateifvertical depth than the thickness of said arms, a ribextending around the exterior of said yoke and ter-,

at their forward ends, and projections on the top and bottom of thecoupler shank having rearwardly-extending lips overlap ping the bosses,said rib and said overlay ping lips being adapted to prevent the arms 0fthe yoke from spreading, the bosses, coupler shank and overlapping lipsbeing npmtmed for mceptinn of pivot pin, :mfi the ynkv and r'mlpierAhgmk being :ulupiwl to be disengaged. after ronmvnl of Mn: pin 10 by :1lmxgz iimlinni movement of either of said l'ncmbez's.

ERNEST H. WTIILKH'IYT.

